Brethren, do not be children in your thinking; be babes in evil, but in thinking be mature. In the law it is written, "By men of strange tongues and by the lips of foreigners will I speak to this people, and even then they will not listen to me, says the Lord." Thus, tongues are a sign not for believers but for unbelievers, while prophecy is not for unbelievers but for believers. If, therefore, the whole church assembles and all speak in tongues, and outsiders or unbelievers enter, will they not say that you are mad? But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all, the secrets of his heart are disclosed; and so falling on his face, he will worship God and declare that God is really among you.

The Lord said this parable, "The kingdom of heaven shall be compared to ten maidens who took their lamps and went to meet the bridegroom. Five of them were foolish, and five were wise. For when the foolish took their lamps, they took no oil with them; but the wise took flasks of oil with their lamps. As the bridegroom was delayed, they all slumbered and slept. But at midnight there was a cry, 'Behold, the bridegroom! Come out to meet him.' Then all those maidens rose and trimmed their lamps. And the foolish said to the wise, 'Give us some of your oil, for our lamps are going out.' But the wise replied, 'Perhaps there will not be enough for us and for you; go rather to the dealers and buy for yourselves.' And while they went to buy, the bridegroom came, and those who were ready went in with him to the marriage feast; and the door was shut. Afterward the other maidens came also, saying, 'Lord, lord, open to us.' But he replied, 'Truly, I say to you, I do not know you.' Watch therefore, for you know neither the day nor the hour in which the Son of man will come."